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Development of a thermal diode heat pipe for the advanced thermal control flight experiment /ATFE/.Description of the analysis, design, fabrication, and test of the engineering model of the ATFE diode. Included is a review of several diode concepts that led to selection of the liquid blockage technique for shut-off. The diode is made of stainless steel, 26 in. long, 0.375-in. nominal OD, with self-filling spiral artery wick and ammonia working fluid. In the normal heat pipe mode, at ambient temperatures, the diode capacity is 85 W. For flight, the pipe will deliver 20 W with a 9 F temperature difference between the external evaporator and condenser surfaces. Reverse mode conduction is less than 1.5 W with a 260 F temperature difference.
Document ID
19720041539
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Swerdling, B.
Kosson, R.
Urkowitz, M. (Grumman Aerospace Corp. Bethpage, N.Y., United States)
Kirkpatrick, J. (NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 6, 2013
Publication Date
April 1, 1972
Subject Category
Thermodynamics And Combustion
Report/Patent Number
AIAA PAPER 72-260
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Thermophysics Conference
Location: San Antonio, TX
Start Date: April 10, 1972
End Date: April 12, 1972
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
72A25205
Funding Number(s)
CONTRACT_GRANT: NAS2-6493
Distribution Limits
Public
Copyright
Other

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